Improving Lives

Through Data Ecosystems

Advertised bids

DESCRIPTION

REQUIRED AT

BID NO.

DUE AT 11:00

APPOINTMENT OF AN IN-HOUSE TRAVEL MANAGEMENT COMPANY(S) IN

RESPECT OF TRAVEL AND ACCOMODATION ARRANGEMENTS FOR

STATS SA FOR THE PERIOD OF THIRTY-SIX (36) MONTHS.

NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za

Bid Document Travel 002_24

STATS SA

STATS SA 002/24

11 February 2024

Bidding Companies

Stats SA 005/23 (pdf 82kb)
Stats SA 006/23 (pdf 91kb)
Stats SA 007/23 (pdf 79kb)
Stats SA 008/23 (pdf 85kb)
Stats SA 009/23 (pdf 150kb)
Stats SA 010/23 (pdf 87kb)
Stats SA 011/23 (pdf 87kb)
Stats SA 012/23 (pdf 87kb)Stats SA 004.23 (xls 67kb)
Stats SA 003.23 (xls 38kb)
Stats SA 002.23 (xls 37kb)
Stats SA 001.23 (xls 42kb)
Stats SA 005.22 (xls 34kb)
Stats SA 001.22 (xls 72kb)
Stats SA 001.21 (xls 50kb) Contact the bids officeContact details

Bid Office Contact Details

All enquiries can be directed to:

ISIbalo House, Koch Street
Salvokop, Pretoria
0002

Telephone Numbers:

(012) 310 8940 /8318/8110/2114

(012) 337 6373

Email Address:

BidofficeGroup@statssa.gov.za

DESCRIPTION

REQUIRED AT

BID NO.

DUE AT 11:00

APPOINTMENT OF A SERVICE PROVIDER TO DRAFT THE 2025 SUSTAINABLE DEVELOPMENT GOALS (SDGS) COUNTRY REPORT.

COMPULSORY INFORMATION SESSION

DATE: 12 DECEMBER 2024

TIME: 10:00 AM

VENUE: ONLINE (MICROSOFT TEAMS)

LINK TO ATTEND INFORMATION SESSION

https://teams.microsoft.com/l/meetup-join/19%3ameeting_ZTU4NmU1ZTUtNTM5OS00MzliLWFiMDktMWY0YzBiYTdjY2Ew%40thread.v2/0?context=%7b%22Tid%22%3a%22ca38a9e5-8ce2-41e8-a41e-647c7b50db4a%22%2c%22Oid%22%3a%223b705b02-0bb6-4c80-b692-7d6186837d0f%22%7d

In order to connect, click the link above

NB: SERVICE PROVIDERS ARE REQUESTED TO CONNECT TEN (10) MINUTES BEFORE THE INFORMATION SESSION STARTS AT 10:00 AM.

Download documents here

Stats SA

STATS SA 003/24

14 JANUARY 2025

APPOINTMENT OF SERVICE PROVIDER TO PROVIDE COUNSELLING AND RELATED EMPLOYEE HEALTH AND WELLNESS SERVICES TO STATS SA EMPLOYEES AND IMMEDIATE FAMILY MEMBERS FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 28 SEPTEMBER 2023

TIME: 10:00 AM

VENUE: ONLINE (MICROSOFT TEAMS)

Link: https://teams.microsoft.com/l/meetup-join/19%3ameeting_NTUwNTZiMjktYWRhMS00OGU1LTlkYzYtNDQ1NzA2MDEyZWNk%40thread.v2/0?context=%7b%22Tid%22%3a%22ca38a9e5-8ce2-41e8-a41e-647c7b50db4a%22%2c%22Oid%22%3a%2210ed28e3-195d-4f6e-afe9-0d2e01423464%22%7d

In order to connect, click the link above.

NB: SERVICE PROVIDERS ARE REQUESTED TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 10:00 AM.

BIDDERS WHO DO NOT ATTEND A COMPULSORY ONLINE INFORMATION SESSION WILL BE DISQUALIFIED. BIDDERS ARE REQUIRED TO SIGN ATTENDANCE REGISTER WHICH WILL BE PROVIDED BEFORE THE END OF THE SESSION AND FAILURE TO SIGN WILL RESULT IN DISQUALIFICATION.

NB: Please note that bid documents will be available for collection at Isibalo House, Koch Street, Salvokop, Pretoria by the reception during working hours 07:30 to 16:00 or can be downloaded on Stats SA website www.statssa.gov.za

Download documents here

Stats SA

STATS SA 002/23

12 October 2023

APPOINTMENT OF SERVICE PROVIDER TO PROVIDE COUNSELLING AND RELATED EMPLOYEE HEALTH AND WELLNESS SERVICES TO STATS SA EMPLOYEES AND IMMEDIATE FAMILY MEMBERS FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 28 SEPTEMBER 2023

TIME: 10:00 AM

VENUE: ONLINE (MICROSOFT TEAMS)

In order to connect, click the link above.

NB: SERVICE PROVIDERS ARE REQUESTED TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 10:00 AM.

Download documents here

Stats SA

STATS SA 002/23

12 October 2023

APPOINTMENT OF A SERVICE PROVIDER TO SUPPLY, DELIVER AND INSTALL OFFICE FURNITURE FOR GAUTENG PROVINCIAL AND JOHANNESBURG DISTRICT OFFICES.

COMPULSORY INFORMATION SESSION

DATE: 01 JUNE 2023

TIME: 11:00

VENUE: 222 SMITH STREET, BRAAMFONTEIN, JOHANNESBURG

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF BRIEFING SESSION AT 11H00. NO PROSPECTIVE BIDDER WILL BE ALLOWED ACCESS INTO THE PREMISES AFTER 11H00

Download documents here

Stats SA

STATS SA 001/23

14 June 2023

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR EASTERN CAPE PROVINCIAL, EXTENDED PROVINCIAL OFFICE (BLOCK I) AND BISHO, NELSON MANDELA METRO, QUEENSTOWN, BUTTERWORTH, ALIWAL NORTH, KOKSTAD DISTRICT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION
DATE: 29 February 2024 And/OR 01 March 2024
TIME: 11:00

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)

https://teams.microsoft.com/l/meetup-join/19%3ameeting_YjRhM2Y0MDEtODk4ZC00YzI4LTlhNmMtYjQwNmRkZWUyYzli%40thread.v2/0?context=%7b%22Tid%22%3a%22ca38a9e5-8ce2-41e8-a41e-647c7b50db4a%22%2c%22Oid%22%3a%223b705b02-0bb6-4c80-b692-7d6186837d0f%22%7d

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM
NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za/
Download document here

Stats SA

STATS SA 005/23

13 March 2024

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR WESTERN CAPE PROVINCIAL OFFICE, METRO (1), CALEDON, GEORGE, METRO (2), PIKETBERG, WORCESTER DISTRCT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 February 2024 And/OR 01 March 2024

TIME: 11:00

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za

Download document here

Stats SA

STATS SA 006/23

13 March 2024

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR NORTHERN CAPE PROVINCIAL OFFICE, SPRINGBOK, KURUMAN, DE AAR, KIMBERLEY, UPINGTON DISTRICT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 February 2024 And OR 01 March 2024
TIME: 11:00
VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)
https://teams.microsoft.com/l/meetup-join/19%3ameeting_YjRhM2Y0MDEtODk4ZC00YzI4LTlhNmMtYjQwNmRkZWUyYzli%40thread.v2/0?context=%7b%22Tid%22%3a%22ca38a9e5-8ce2-41e8-a41e-647c7b50db4a%22%2c%22Oid%22%3a%223b705b02-0bb6-4c80-b692-7d6186837d0f%22%7d
NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM
NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.zaDownload documents here

Stats SA

STATS SA 007/23

13 March 2024

THE APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR FREE STATE PROVINCIAL OFFICE, WELKOM, KROONSTAD, BETHLEHEM AND TROMPSBURG DISTRICT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 February 2024 And OR 01 March 2024

TIME: 11:00

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za

Download documents here

Stats SA

STATS SA 008/23

13 March 2024

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR GAUTENG PROVINCIAL OFFICE, JOHANNESBURG, SEDIBENG, EKURHULENI, WEST RAND DISTRICT OFFICES FOR THIRTY-SIX (36) MONTHS

COMPULSORY INFORMATION SESSION

DATE: 29 February 2024 And/OR 01 March 2024

TIME: 11:00

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za

Download documents here

Stats SA

STATS SA 009/23

13 march 2024

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRCA (STATS SA) AT MPUMALANGA DISTRICT OFFICE WITBANK AND SIYABUSWA FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 FEBRUARY 2024 AND / OR 01 MARCH 2024

TIME: 11:00 AM

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND / OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

Download documents here

Stats SA

STATS SA 010/23

13 March 2024

APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE PHYSICAL SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRCA (STATS SA) AT KZN PROVINCIAL, ETHEKWINI, ILEMBE, KING CETSHWAYO, UMKHANYAKUDE, ZULULAND, UMZINYATHI, AMAJUBA, UTHUKELA, UMGUNGUNDLOVU, HARRY GWALA AND UGU DISTRICT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 FEBRUARY 2024 AND / OR 01 MARCH 2024

TIME: 11:00 AM

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND / OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

Download documents here

Stats SA

STATS SA 011/23

13 March 2024

THE APPOINTMENT OF SERVICE PROVIDER/S TO PROVIDE SECURITY GUARDING SERVICES FOR STATISTICS SOUTH AFRICA (STATS SA) FOR NORTH WEST PROVINCIAL OFFICE, MMABATHO, VRYBURG, KLERKSDORP AND RUSTENBURG DISTRICT OFFICES FOR A PERIOD OF THIRTY-SIX (36) MONTHS.

COMPULSORY INFORMATION SESSION

DATE: 29 February 2024 And OR 01 March 2024

TIME: 11:00

VENUE: ISIBALO HOUSE, KOCH STREET, SALVOKOP, PRETORIA AND OR ONLINE (MICROSOFT TEAMS)

NB: SERVICE PROVIDERS ARE REQUESTED TO BE AT THE VENUE OF THE BRIEFING SESSION AT 10H45 AND /OR TO CONNECT 15 MINUTES BEFORE THE INFORMATION SESSION STARTS AT 11:00AM

NB: Please note that bid documents will be available after advert and can be downloaded at the E-Tender Publication Portal: www.etenders.gov.za, also at Stats SA website: www.statssa.gov.za

Download documents here

Stats SA

STATS SA 012/23

13 March 2024

Economic Stats

Joe de Beer (Deputy Director-General)
012 310 8024
082 888 2600
joedb@statssa.gov.za

Peter Perkins
(Economist)
012 310 8389
082 883 9532
peterp@statssa.gov.za

Social Stats

Gwen Lehloenya (Acting Deputy Director-General)
012 310 8333
082 888 2323
gwenL@statssa.gov.za

Neo Nghenavo
(Director)
012 310 8047
082 888 2613
neon@statssa.gov.za

**Scroll for more contacts by subject area**
Topic	Contact	Alternative Contact
Consumer price index (CPI), Producer price index (PPI), Unit value indices: exports / imports, Construction materials price indices	Patrick Kelly (Chief Director) 012 310 8290 082 888 2248 patrickke@statssa.gov.za	Marietjie Bennett (Director) 012 310 8077 082 888 2194 marietjieb@statssa.gov.za
Government finance: national and provincial government	Moses Mnyaka (Chief Director) 012 310 8984 / 8586 083 471 3531 mosesmn@statssa.gov.za	Elizabeth Makhafola (Director) 012 310 8977 082 888 9062 elizabethma@statssa.gov.za
Government finance: local government	Moses Mnyaka (Chief Director) 012 310 8984 / 8586 083 471 3531 mosesmn@statssa.gov.za	Malibongwe Mhemhe (Director) 012 310 6928 082 906 8964 malibongwem@statssa.gov.za
Supply and use tables, Satellite accounts, Regional GDP	Michael Manamela (Chief Director) 012 310 8520 082 888 2205 michaelm@statssa.gov.za
Gross domestic product (GDP), production	Michael Manamela (Chief Director) 012 310 8520 082 888 2205 michaelm@statssa.gov.za	Bontlenyana Makhoba(Chief Economist) 012 310 8567 bontlenyanam@statssa.gov.za
Gross domestic product (GDP), expenditure	Michael Manamela (Chief Director) 012 310 8520 082 888 2205 michaelm@statssa.gov.za	Litshani Ligudu (Director) 012 310 4674 082 884 4279 litshanil@statssa.gov.za
Environmental-economic accounts	Gerhardt Bouwer (Chief Director) 012 310 8241 082 888 2409 gerhardb@statssa.gov.za	Riaan Grobler (Director) 012 406 3474 084 515 2908 riaang@statssa.gov.za
Mining, manufacturing, electricity, capacity utilisation	Hlabi Morudu (Chief Director) 012 310 8377 082 317 8531 hlabim@statssa.gov.za	Nicolai Claassen (Director) 012 310 8007 076 759 0200 nicolaic@statssa.gov.za
Retail, wholesale, motor, land transport	Hlabi Morudu (Chief Director) 012 310 8377 082 317 8531 hlabim@statssa.gov.za	Keshnee Naidoo (Director) 012 310 8423 083 689 5341 keshneen@statssa.gov.za
Building, liquidations, civil cases for debt, food & beverages, tourist accommodation	Hlabi Morudu (Chief Director) 012 310 8377 082 317 8531 hlabim@statssa.gov.za	Joyce Essel-Mensah (Director) 012 310 8255 082 888 2374 joycee@statssa.gov.za
Annual financial statistics (AFS)	Sagaren Pillay (Chief Director) 012 310 4619 082 905 2665 sagarenp@statssa.gov.za	Amukelani Ngobeni (Director) 012 310 2938 082 677 4536 amukelanin@statssa.gov.za
Quarterly financial statistics (QFS)	Sagaren Pillay (Chief Director) 012 310 4619 082 905 2665 sagarenp@statssa.gov.za	Krisseelan Govinden (Director) 012 310 4651 082 901 7960 krisseelang@statssa.gov.za
Structural industry statistics (large sample surveys of industries every 3 to 5 years; agriculture)	Itani Magwaba (Chief Director) 012 337 6471 / 6254 082 905 5143 itanim@statssa.gov.za	Tshepo Pekane (Director) 012 310 8191 083 675 8654 tshepop@statssa.gov.za
Population Statistics (Census and Community Survey)	Christine Khoza (Chief Director) 012 310 2185 071 670 2672 christinek@statssa.gov.za	Angela Ngyende (Chief Statistician) 012 310 4699 079 519 3212 angelan@statssa.gov.za
Demography-Mid-year Population Estimates	Diego Iturralde (Chief Director) 012 310 8922 082 413 2661 diegoi@statssa.gov.za	Chantal Munthree (Chief Statistician) 012 310 6648 082 888 2289 chantalMu@statssa.gov.za
Labour Statistics- Quarterly Labour Force Survey (QLFS)	Malerato Mosiane (Acting Chief Director) 012 310 8688 082 888 2449 maleratoM@statssa.gov.za	Desiree Manamela (Director) 012 310 2145 071 681 2768 DesireeM@statssa.gov.za Malerato Mosiane (Chief Statistician) 012 310 8688 082 888 2449 maleratoM@statssa.gov.za
Quarterly Employment Statistics (QES)	Malerato Mosiane (Acting Chief Director) 012 310 8688 082 8882449 maleratoM@statssa.gov.za	Matlapane Masupye (Acting Director) 012 310 8168 082 317 5340 matlapanem@statssa.gov.za
Tourism Statistics (Domestic Tourism Survey)	Isabel Schmidt (Chief Director ) 012 337 6379 082 884 4281 IsabelSc@statssa.gov.za	Brenda Mosima (Director) 012 310 8168 082 906 7925 BrendaMo@statssa.gov.za
Crime and Safety Statistics (Victims of Crime Survey)	Isabel Schmidt (Chief Director ) 012 337 6379 082 884 4281 IsabelSc@statssa.gov.za	Joseph Lukhwareni (Director) 012 310 8485 082 888 2486 JosephL@statssa.gov.za
Service Delivery Statistics (General Household Survey)	Isabel Schmidt (Chief Director ) 012 337 6379 082 884 4281 IsabelSc@statssa.gov.za	Niel Roux (Director) 012 310 2939 082 904 7919 NielR@statssa.gov.za
Transport Statistics (National Travel Survey)	Isabel Schmidt (Chief Director ) 012 337 6379 082 884 4281 IsabelSc@statssa.gov.za	Solly Molayi (Director) 012 310 6442 083 440 7035 SollyMol@statssa.gov.za
Gender Statistics	Isabel Schmidt (Chief Director ) 012 337 6379 082 884 4281 IsabelSc@statssa.gov.za	Tshepo Mabela (Director) 012 310 8587 082 941 9383 TshepoMab@statssa.gov.za
Mortality and Causes of Deaths	Rika du Plessis (Acting Chief Director) Health and Vital Statistics 012 310 2913 .. rikaDP@statssa.gov.za	Thabo Molebatsi(Director) 012 310 4857 060 997 8372 thabomol@statssa.gov.za
Tourism and Migration	Rika du Plessis (Acting Chief Director) Health and Vital Statistics 012 310 2913 .. rikaDP@statssa.gov.za	Ramadimetja Matji(Director) 012 406 33011 071 670 3272 ramadimetjaM@statssa.gov.za
Registered Births	Rika du Plessis (Acting Chief Director) Health and Vital Statistics 012 310 2913 .. rikaDP@statssa.gov.za	Thabo Molebatsi(Director) 012 310 4857 060 997 8372 thabomol@statssa.gov.za
Marriages and Divorces	Rika du Plessis (Acting Chief Director) Health and Vital Statistics 012 310 2913 .. rikaDP@statssa.gov.za	Ramadimetja Matji(Director) 012 406 33011 071 670 3272 ramadimetjaM@statssa.gov.za
Living Conditions Survey	Rika du Plessis (Acting Chief Director) Health and Vital Statistics 012 310 2913 .. rikaDP@statssa.gov.za	Thabo Molebatsi(Director) 012 310 4857 060 997 8372 thabomol@statssa.gov.za
Income and Expenditure Survey	Nozipho Shabalala (Chief Director ) 012 310 6994 082 904 8896 Noziphos@statssa.gov.za	Werner Ruch (Director) 012 310 6318 082 906 7967 wernerr@statssa.gov.za

Improving Lives

Through Data Ecosystems

Advertised bids

Bidding Companies

Bid Office Contact Details

All enquiries can be directed to:

Telephone Numbers:

Email Address:

STATS SA 010/23

Related Information

Press Room

My Municipality

In My Classroom

Tools

Links

Careers